I'm starting to implement instrumentation testing for my company to increase our code quality and speed of deployment. I'm rewriting a module of our application and I'm trying to implement TDD principles. My code does not work at the moment and I therefore wanted to attach a debugger to my instrumentation tests to verify its execution. Except that at each Debug compilation I end up with the error Test run failed to complete. Instrumentation run failed due to Process crashed.
By dichotomy I created a simple project containing just one module and I launched the instrumental tests given as an example.
/**
* Instrumented test, which will execute on an Android device.
*
* See [testing documentation](http://d.android.com/tools/testing).
*/
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
@Test
fun useAppContext() {
// Context of the app under test.
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
assertEquals("com.example.mylibrary.test", appContext.packageName)
}
}
Same result. Then I launched the same instrumental test in the app module and here surprise, the debugger was attached and a breakpoint triggered.
It is not possible to attach a debugger to an instrumental test in a module? The test works and is validated when I run it
You will find here the build.gradle file of my library
plugins {
id 'com.android.library'
id 'org.jetbrains.kotlin.android'
}
android {
namespace 'com.example.mylibrary'
compileSdk 33
defaultConfig {
minSdk 24
targetSdk 33
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
consumerProguardFiles "consumer-rules.pro"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
debug {
testCoverageEnabled true
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
}
dependencies {
implementation 'androidx.core:core-ktx:1.8.0'
implementation 'androidx.appcompat:appcompat:1.4.1'
implementation 'com.google.android.material:material:1.5.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}
Nothing fancy, this is the file created when the project was created. Same for the build.gradle of app module
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
}
android {
namespace 'com.example.myapplication'
compileSdk 33
defaultConfig {
applicationId "com.example.myapplication"
minSdk 24
targetSdk 33
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
vectorDrawables {
useSupportLibrary true
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
buildFeatures {
compose true
}
composeOptions {
kotlinCompilerExtensionVersion '1.3.2'
}
packagingOptions {
resources {
excludes += '/META-INF/{AL2.0,LGPL2.1}'
}
}
}
dependencies {
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
androidTestImplementation platform('androidx.compose:compose-bom:2022.10.00')
androidTestImplementation 'androidx.compose.ui:ui-test-junit4'
/** remaining dependencies ommitted to reduce noice **
}
I'm on Android Studio Flamingo and Gradle 8.0
